Measurement and analysis of broadband acoustic propagation in very shallow water

被引:9
|
作者
Lee, Seongwook [1 ]
Park, Kyu-Chil
Yoon, Jong Rak
Lee, Phil-Ho
机构
[1] Pukyong Natl Univ, Div Elect Comp & Telecommun Engn, Pusan 608737, South Korea
[2] Agcy Def Dev, Kyongnam 645600, South Korea
关键词
very shallow water; ship noise; propagation loss; bottom shear property;
D O I
10.1143/JJAP.46.4971
中图分类号
O59 [应用物理学];
学科分类号
摘要
The results of an experiment conducted to understand the frequency dependence of acoustic propagation in very shallow water using a ship as an acoustic source are presented and the possible causes of the features appearing in the results are discussed. The result shows large propagation losses at a frequency of approximately 140 Hz. The results of numerical simulation including the shear property and layered structure of the bottom imply that the features might be caused by the shear property of the lower sediment that lies below the thin upper fluid sediment.
引用
收藏
页码:4971 / 4973
页数:3
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